Dirt Bike Rear Sprockets
Dirt Bike Rear Sprockets for Honda, KTM, Beta & Husqvarna: 42-51 Tooth Steel & Aluminum at JJ Motorsports
Customize your dirt bike's gearing for optimal acceleration or top speed with premium rear sprockets from JJ Motorsports, precision-machined for perfect chain fit, reduced weight, and extreme durability in motocross, enduro, and trail riding. Our selection includes high-tensile steel and lightweight aluminum sprockets in 42-51 tooth counts designed for smoother power transfer, less rotational mass, and customizable ratios to match terrain or riding style. Compatible with top models like Honda CRF, KTM SX/EXC, Beta RR, Husqvarna FC/FE, and more, these race-proven sprockets from trusted brands ensure minimal chain wear, reliable performance, and longevity in muddy, rocky, or high-speed conditions. From JT Sprockets' computer-optimized steel for OEM reliability to Renthal's ultralight aluminum for racing gains, dial in your final drive for tighter woods, faster tracks, or balanced trails with the ideal tooth count.
Shop brands like JT Sprockets, Moose Racing, and Renthal for world-class quality. Explore related categories such as dirt bike front sprockets for full gearing kits or dirt bike drive chains for complete drivetrain upgrades.
Top Dirt Bike Rear Sprockets
- JT Sprockets Steel Rear Sprocket Graphite 48 Tooth JTX251.48GR – 48-tooth hardened steel rear sprocket with graphite finish; computer-designed for perfect chain alignment and durability in off-road conditions.
- JT Sprockets Rear Sprocket Beta/Honda Red 51 Tooth JTA210.51RED – Lightweight aluminum 51-tooth sprocket in red anodized finish for Beta RR and Honda CRF models; reduces unsprung weight for better acceleration.
- Moose Offroad Steel Rear Sprocket 48 Tooth 1210-BET-48-STL – Heavy-duty steel 48-tooth sprocket for Beta models; heat-treated for extreme strength and wear resistance in aggressive off-road use.
- Renthal Rear Sprocket Aluminum 42 Tooth Gas Gas/Husaberg/Husqvarna/KTM 224U-520-42GPSI – Ultralight CNC-machined aluminum 42-tooth sprocket with gold finish; precision engineering for KTM, Husqvarna, and Gas Gas models, ideal for racing.
Browse our in-stock inventory below with same-day shipping and expert support. Free shipping on orders over $99! Questions? Contact us for fitment advice!
- Product
- Qty in Cart
- Quantity
- Price
- Subtotal
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Renthal 53-Tooth Rear Sprocket for Honda 154U-520-53GRBK
RENTHAL
$99.82Enhance your Honda motorcycle's performance with the RENTHAL 53-Tooth Rear Sprocket. Crafted from high-quality 7075-T6 aluminum alloy, this sprocket offers a lightweight yet durable solution for riders seeking improved acceleration and handling. Its...12110179- SKU:
- 12110179
- Availability:
- Ships Same Business Day
- Weight:
- 1.11 LBS
- MOUNTING POSITION:
- REAR
- TYPE:
- DRIVE
- CHAIN SIZE:
- 520
- RIDING STYLE:
- ADVENTURE TOURING / DUAL-SPORT
- RIDING STYLE:
- STREET
- UNITS:
- EACH
- COLOR/FINISH:
- BLACK
- RIDING STYLE:
- OFF-ROAD
- TOOTH COUNT:
- 53
- MATERIAL:
- 7075-T6 ALUMINUM
- PRODUCT NAME:
- SPROCKET
$99.82 -
Renthal 53-Tooth Rear Sprocket for Honda Red 154U-520-53GRRD
RENTHAL
$104.61Enhance your Honda motorcycle's performance with the RENTHAL 53-Tooth Rear Sprocket. Crafted from high-quality 7075-T6 aluminum alloy, this sprocket offers a lightweight yet durable solution for riders seeking improved acceleration and handling. Its...12110180- SKU:
- 12110180
- Availability:
- Ships Same Business Day
- Weight:
- 1.16 LBS
- TOOTH COUNT:
- 53
- MATERIAL:
- 7075-T6 ALUMINUM
- PRODUCT NAME:
- SPROCKET
- CHAIN SIZE:
- 520
- COLOR/FINISH:
- RED
- MOUNTING POSITION:
- REAR
- RIDING STYLE:
- ADVENTURE TOURING / DUAL-SPORT
- RIDING STYLE:
- STREET
- TYPE:
- DRIVE
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- EACH
$104.61 -
Renthal 47-Tooth Black Rear Sprocket for Kawasaki 121U-428-47GPBK
RENTHAL
$99.82Enhance your Kawasaki's performance with the RENTHAL 47-Tooth Rear Sprocket. Crafted from a specially enhanced 7075-T6 aluminum alloy, this sprocket offers exceptional strength and durability while being 66% lighter than traditional steel options. Its...12110281- SKU:
- 12110281
- Availability:
- Ships Same Business Day
- Weight:
- 0.80 LBS
- COLOR/FINISH:
- BLACK
- MATERIAL:
- 7075-T6 ALUMINUM
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- DRIVE
- CHAIN SIZE:
- 428
- PRODUCT NAME:
- SPROCKET
- TOOTH COUNT:
- 47
- UNITS:
- EACH
- MOUNTING POSITION:
- REAR
$99.82 -
Renthal Black 48-Tooth Rear Sprocket for 428 Chain 121U-428-48GPBK
RENTHAL
$99.82Enhance your Kawasaki's performance with the RENTHAL 48-Tooth Rear Sprocket. Crafted from a specially enhanced 7075-T6 aluminum alloy, this sprocket offers exceptional strength and durability while being 66% lighter than traditional steel sprockets. Its...12110282- SKU:
- 12110282
- Availability:
- Ships Same Business Day
- Weight:
- 0.90 LBS
- MATERIAL:
- 7075-T6 ALUMINUM
- MOUNTING POSITION:
- REAR
- CHAIN SIZE:
- 428
- PRODUCT NAME:
- SPROCKET
- UNITS:
- EACH
- COLOR/FINISH:
- BLACK
- RIDING STYLE:
- OFF-ROAD
- TOOTH COUNT:
- 48
- TYPE:
- DRIVE
$99.82 -
Renthal 47-Tooth Blue Rear Sprocket for Yamaha YZ85 121U-428-47GPBU
RENTHAL
$104.61Enhance your Yamaha's performance with the RENTHAL 47-Tooth Rear Sprocket, precision-engineered for durability and lightweight efficiency. Crafted from a specially enhanced 7075-T6 aluminum alloy, this sprocket offers exceptional strength while being 66%...12110285- SKU:
- 12110285
- Availability:
- Ships Same Business Day
- Weight:
- 0.60 LBS
- MOUNTING POSITION:
- REAR
- TYPE:
- DRIVE
- CHAIN SIZE:
- 428
- COLOR/FINISH:
- BLUE
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- EACH
- MATERIAL:
- 7075-T6 ALUMINUM
- PRODUCT NAME:
- SPROCKET
- TOOTH COUNT:
- 47
$104.61 -
Renthal 48T Blue Rear Sprocket for Yamaha YZ85 1993-2026 121U-428-48GPBU
RENTHAL
$104.61Enhance your Yamaha's performance with the RENTHAL 48-Tooth Rear Sprocket, precision-engineered from 7075-T6 aluminum alloy for exceptional strength and reduced weight. Its self-cleaning mud grooves at each tooth prevent buildup, ensuring consistent...12110286- SKU:
- 12110286
- Availability:
- Ships Same Business Day
- Weight:
- 0.80 LBS
- MOUNTING POSITION:
- REAR
- TYPE:
- DRIVE
- MATERIAL:
- 7075-T6 ALUMINUM
- PRODUCT NAME:
- SPROCKET
- RIDING STYLE:
- OFF-ROAD
- TOOTH COUNT:
- 48
- CHAIN SIZE:
- 428
- COLOR/FINISH:
- BLUE
- UNITS:
- EACH
$104.61 -
Renthal 49T Blue Rear Sprocket 428 Chain 121U-428-49GPBU
RENTHAL
$104.61Enhance your Yamaha's performance with the RENTHAL 49-Tooth Rear Sprocket. Crafted from high-strength 7075-T6 aluminum alloy, this sprocket offers a lightweight yet durable solution for off-road enthusiasts. Its self-cleaning mud grooves at each tooth...12110287- SKU:
- 12110287
- Availability:
- Ships Same Business Day
- Weight:
- 0.85 LBS
- MATERIAL:
- 7075-T6 ALUMINUM
- COLOR/FINISH:
- BLUE
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- DRIVE
- UNITS:
- EACH
- CHAIN SIZE:
- 428
- PRODUCT NAME:
- SPROCKET
- TOOTH COUNT:
- 49
- MOUNTING POSITION:
- REAR
$104.61 -
Renthal 50-Tooth Aluminum Rear Sprocket for Yamaha 121U-428-50GPBU
RENTHAL
$104.61Enhance your Yamaha's performance with the RENTHAL 50-Tooth Rear Sprocket. Crafted from a specially enhanced 7075-T6 aluminum alloy, this sprocket offers exceptional durability while being 66% lighter than steel. Its precision CNC-machined design...12110288- SKU:
- 12110288
- Availability:
- Ships Same Business Day
- Weight:
- 0.85 LBS
- MOUNTING POSITION:
- REAR
- MATERIAL:
- 7075-T6 ALUMINUM
- CHAIN SIZE:
- 428
- PRODUCT NAME:
- SPROCKET
- TOOTH COUNT:
- 50
- COLOR/FINISH:
- BLUE
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- DRIVE
- UNITS:
- EACH
$104.61 -
Renthal Red 49-Tooth Rear Sprocket for Honda CR80R CR85R CRF150R 189U-420-49GRRD
RENTHAL
$104.61Enhance your Honda's performance with the RENTHAL 49-Tooth Rear Sprocket, crafted from a specially enhanced 7075-T6 aluminum alloy. This ultralight sprocket is approximately 66% lighter than steel, yet incredibly durable, providing maximum power transfer...12110289- SKU:
- 12110289
- Availability:
- Ships Same Business Day
- Weight:
- 0.70 LBS
- UNITS:
- EACH
- CHAIN SIZE:
- 420
- COLOR/FINISH:
- RED
- MOUNTING POSITION:
- REAR
- MATERIAL:
- 7075-T6 ALUMINUM
- RIDING STYLE:
- OFF-ROAD
- PRODUCT NAME:
- SPROCKET
- TOOTH COUNT:
- 49
- TYPE:
- DRIVE
$104.61 -
Renthal 50-Tooth Rear Sprocket Red 420 Chain Honda CRF CR 189U-420-50GRRD
RENTHAL
$104.61Enhance your Honda motorcycle's performance with the RENTHAL 50-Tooth Rear Sprocket. Crafted from a specially enhanced 7075-T6 aluminum alloy, this sprocket offers a perfect balance between strength and weight reduction. Its ultralight design is...12110290- SKU:
- 12110290
- Availability:
- Ships Same Business Day
- Weight:
- 0.55 LBS
- MATERIAL:
- 7075-T6 ALUMINUM
- RIDING STYLE:
- OFF-ROAD
- CHAIN SIZE:
- 420
- COLOR/FINISH:
- RED
- MOUNTING POSITION:
- REAR
- PRODUCT NAME:
- SPROCKET
- UNITS:
- EACH
- TOOTH COUNT:
- 50
- TYPE:
- DRIVE
$104.61 -
Renthal Red 55T Rear Sprocket for Honda CR80R CR85R CRF150R 189U-420-55GRRD
RENTHAL
$104.61Enhance your Honda motorcycle's performance with the RENTHAL 189U-420-55GRRD rear sprocket. Crafted from a specially enhanced 7075-T6 aluminum alloy, this sprocket offers a perfect blend of strength and lightweight design. Its ultralight construction is...12110291- SKU:
- 12110291
- Availability:
- Ships Same Business Day
- Weight:
- 0.75 LBS
- MATERIAL:
- 7075-T6 ALUMINUM
- RIDING STYLE:
- OFF-ROAD
- PRODUCT NAME:
- SPROCKET
- MOUNTING POSITION:
- REAR
- TYPE:
- DRIVE
- UNITS:
- EACH
- CHAIN SIZE:
- 420
- COLOR/FINISH:
- RED
- TOOTH COUNT:
- 55
$104.61 -
Renthal Red 56-Tooth Rear Sprocket for Honda CR80R CR85R CRF150R 189U-420-56GRRD
RENTHAL
$104.61Enhance your Honda dirt bike's performance with the RENTHAL 56-Tooth Rear Sprocket. Crafted from high-strength 7075-T6 aluminum alloy, this sprocket offers a lightweight yet durable solution for riders seeking improved acceleration and handling. Its...12110292- SKU:
- 12110292
- Availability:
- Ships Same Business Day
- Weight:
- 0.70 LBS
- PRODUCT NAME:
- SPROCKET
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- DRIVE
- UNITS:
- EACH
- COLOR/FINISH:
- RED
- MATERIAL:
- 7075-T6 ALUMINUM
- TOOTH COUNT:
- 56
- CHAIN SIZE:
- 420
- MOUNTING POSITION:
- REAR
$104.61 -
Renthal Black 50-Tooth Rear Sprocket for Kawasaki KX100 KX80 KX85 191U-420-50GEBK
RENTHAL
$99.82Enhance your Kawasaki's performance with the RENTHAL 50-Tooth Rear Sprocket. Crafted from high-strength 7075-T6 aluminum alloy, this sprocket offers a lightweight yet durable solution for your off-road adventures. Its self-cleaning mud grooves at each...12110298- SKU:
- 12110298
- Availability:
- Ships Same Business Day
- Weight:
- 0.75 LBS
- TYPE:
- DRIVE
- UNITS:
- EACH
- PRODUCT NAME:
- SPROCKET
- TOOTH COUNT:
- 50
- COLOR/FINISH:
- BLACK
- MATERIAL:
- 7075-T6 ALUMINUM
- RIDING STYLE:
- OFF-ROAD
- CHAIN SIZE:
- 420
- MOUNTING POSITION:
- REAR
$99.82 -
Renthal 51T Rear Sprocket for Kawasaki KX100 KX80 KX85 Black 191U-420-51GEBK
RENTHAL
$99.82Enhance your Kawasaki's performance with the RENTHAL 51-Tooth Rear Sprocket. Crafted from a specially enhanced 7075-T6 aluminum alloy, this sprocket offers exceptional strength while maintaining an ultralight design, making it approximately 66% lighter...12110299- SKU:
- 12110299
- Availability:
- Ships Same Business Day
- Weight:
- 0.75 LBS
- MOUNTING POSITION:
- REAR
- TYPE:
- DRIVE
- UNITS:
- EACH
- CHAIN SIZE:
- 420
- COLOR/FINISH:
- BLACK
- MATERIAL:
- 7075-T6 ALUMINUM
- RIDING STYLE:
- OFF-ROAD
- PRODUCT NAME:
- SPROCKET
- TOOTH COUNT:
- 51
$99.82 -
Renthal Ultralight Rear Sprocket 52T Black 191U-420-52GEBK
RENTHAL
$99.82Enhance your Kawasaki's performance with the RENTHAL 52-Tooth Rear Sprocket. Crafted from high-strength 7075-T6 aluminum alloy, this sprocket offers a perfect balance of durability and lightweight design, making it an excellent upgrade for riders seeking...12110300- SKU:
- 12110300
- Availability:
- Ships Same Business Day
- Weight:
- 0.90 LBS
- MOUNTING POSITION:
- REAR
- TYPE:
- DRIVE
- UNITS:
- EACH
- CHAIN SIZE:
- 420
- COLOR/FINISH:
- BLACK
- RIDING STYLE:
- OFF-ROAD
- MATERIAL:
- 7075-T6 ALUMINUM
- PRODUCT NAME:
- SPROCKET
- TOOTH COUNT:
- 52
$99.82 -
Renthal 49-Tooth Aluminum Rear Sprocket for Husqvarna Blue 224U-520-49GPBU
RENTHAL
$104.61Enhance your Husqvarna's performance with the RENTHAL 49-Tooth Blue Rear Sprocket. Crafted from a specially enhanced 7075-T6 aluminum alloy, this sprocket offers exceptional durability while being 66% lighter than steel. Its precision CNC-machined design...12111332- SKU:
- 12111332
- Availability:
- Ships Same Business Day
- Weight:
- 1.00 LBS
- COLOR/FINISH:
- BLUE
- MATERIAL:
- 7075-T6 ALUMINUM
- RIDING STYLE:
- OFF-ROAD
- CHAIN SIZE:
- 520
- RIDING STYLE:
- ADVENTURE TOURING / DUAL-SPORT
- RIDING STYLE:
- STREET
- UNITS:
- EACH
- TYPE:
- DRIVE
- MOUNTING POSITION:
- REAR
- PRODUCT NAME:
- SPROCKET
- TOOTH COUNT:
- 49
$104.61 -
Renthal 50-Tooth Blue Rear Sprocket for Husqvarna 224U-520-50GPBU
RENTHAL
$104.61Enhance your Husqvarna's performance with the RENTHAL 50-Tooth Rear Sprocket, precision-engineered from high-strength 7075-T6 aluminum alloy. Its ultralight design reduces weight by 66% compared to steel, while maintaining exceptional durability. The...12111333- SKU:
- 12111333
- Availability:
- Ships Same Business Day
- Weight:
- 1.05 LBS
- COLOR/FINISH:
- BLUE
- MATERIAL:
- 7075-T6 ALUMINUM
- RIDING STYLE:
- OFF-ROAD
- PRODUCT NAME:
- SPROCKET
- TOOTH COUNT:
- 50
- TYPE:
- DRIVE
- MOUNTING POSITION:
- REAR
- CHAIN SIZE:
- 520
- RIDING STYLE:
- ADVENTURE TOURING / DUAL-SPORT
- RIDING STYLE:
- STREET
- UNITS:
- EACH
$104.61 -
Renthal 51-Tooth Blue Anodized Rear Sprocket for Husqvarna 224U-520-51GPBU
RENTHAL
$104.61Enhance your Husqvarna's performance with the RENTHAL 51-Tooth Rear Sprocket. Crafted from a specially enhanced 7075-T6 aluminum alloy, this sprocket offers exceptional durability while being 66% lighter than steel. Its precision CNC-machined design...12111334- SKU:
- 12111334
- Availability:
- Ships Same Business Day
- Weight:
- 1.10 LBS
- COLOR/FINISH:
- BLUE
- MATERIAL:
- 7075-T6 ALUMINUM
- CHAIN SIZE:
- 520
- RIDING STYLE:
- ADVENTURE TOURING / DUAL-SPORT
- RIDING STYLE:
- STREET
- UNITS:
- EACH
- MOUNTING POSITION:
- REAR
- PRODUCT NAME:
- SPROCKET
- TOOTH COUNT:
- 51
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- DRIVE
$104.61 -
Renthal Rear Sprocket 38T Orange 415 Chain 48041538POR
RENTHAL
$97.95Enhance your KTM's performance with the RENTHAL 38-Tooth Rear Sprocket. Crafted from high-strength 7075-T6 aluminum alloy, this sprocket offers a lightweight yet durable solution for off-road enthusiasts. Its self-cleaning mud grooves at each tooth...12111201- SKU:
- 12111201
- Availability:
- Ships Same Business Day
- Weight:
- 0.60 LBS
- TYPE:
- DRIVE
- MATERIAL:
- 7075-T6 ALUMINUM
- MOUNTING POSITION:
- REAR
- PRODUCT NAME:
- SPROCKET
- CHAIN SIZE:
- 415
- COLOR/FINISH:
- ORANGE
- RIDING STYLE:
- OFF-ROAD
- TOOTH COUNT:
- 38
- UNITS:
- EACH
$97.95 -
Renthal 40-Tooth Rear Sprocket for KTM 50 SX 415 Chain Orange 48041540POR
RENTHAL
$97.95Enhance your KTM's performance with the RENTHAL 40-Tooth Rear Sprocket, precision-engineered from high-strength 7075-T6 aluminum alloy. This ultralight sprocket is 66% lighter than steel counterparts, yet offers exceptional durability. Its self-cleaning...12111203- SKU:
- 12111203
- Availability:
- Ships Same Business Day
- Weight:
- 0.40 LBS
- MOUNTING POSITION:
- REAR
- PRODUCT NAME:
- SPROCKET
- TYPE:
- DRIVE
- CHAIN SIZE:
- 415
- MATERIAL:
- 7075-T6 ALUMINUM
- RIDING STYLE:
- OFF-ROAD
- TOOTH COUNT:
- 40
- COLOR/FINISH:
- ORANGE
- UNITS:
- EACH
$97.95
